/*
 * Hale is highly moddable tactical RPG.
 * Copyright (C) 2012 Jared Stephen
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

package hale.mainmenu;

import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;

import hale.Game;
import hale.util.Logger;

/**
 * The class that checks to see if an update is available
 *
 * @author Jared
 */

public class CheckForUpdatesTask extends Thread
{
    private MainMenu mainMenu;

    private InputStream in;

    /**
     * Creates a new task which will check for updates
     *
     * @param mainMenu the mainmenu to notify if an update is found
     */

    public CheckForUpdatesTask(MainMenu mainMenu)
    {
        this.mainMenu = mainMenu;
    }

    @Override
    public void run()
    {
        try {
            in = new URL("http://www.halegame.com/version.txt").openStream();

            BufferedReader reader = new BufferedReader(new InputStreamReader(in));
            String serverVersion = reader.readLine();

            if (!serverVersion.equals(mainMenu.getVersion())) {
                mainMenu.enableUpdate();

                new File(Game.plataform.getConfigDirectory() + "updateAvailable.txt").createNewFile();
            }

        } catch (Exception e) {
            Logger.appendToErrorLog("Error checking for updates", e);
        }

        if (in != null) {
            try {
                in.close();
            } catch (IOException e) {
                Logger.appendToErrorLog("Error closing input stream while checking for updates", e);
            }
        }
    }
}
